// SPDX-License-Identifier: MIT /* * Copyright 2006-2012 Red Hat, Inc. * Copyright 2018-2020 Cisco Systems, Inc. and/or its affiliates. All rights reserved. * * Author: Adam Jackson * Maintainer: Hans Verkuil */ #include #include #include #include #include "edid-decode.h" char *edid_state::manufacturer_name(const unsigned char *x) { static char name[4]; name[0] = ((x[0] & 0x7c) >> 2) + '@'; name[1] = ((x[0] & 0x03) << 3) + ((x[1] & 0xe0) >> 5) + '@'; name[2] = (x[1] & 0x1f) + '@'; name[3] = 0; if (!isupper(name[0]) || !isupper(name[1]) || !isupper(name[2])) fail("Manufacturer name field contains garbage.\n"); return name; } static const struct { unsigned dmt_id; unsigned std_id; unsigned cvt_id; struct timings t; } dmt_timings[] = { { 0x01, 0x0000, 0x000000, { 640, 350, 64, 35, 31500, 0, false, 32, 64, 96, true, 32, 3, 60, false } }, { 0x02, 0x3119, 0x000000, { 640, 400, 16, 10, 31500, 0, false, 32, 64, 96, false, 1, 3, 41, true } }, { 0x03, 0x0000, 0x000000, { 720, 400, 9, 5, 35500, 0, false, 36, 72, 108, false, 1, 3, 42, true } }, { 0x04, 0x3140, 0x000000, { 640, 480, 4, 3, 25175, 0, false, 8, 96, 40, false, 2, 2, 25, false, 8, 8 } }, { 0x05, 0x314c, 0x000000, { 640, 480, 4, 3, 31500, 0, false, 16, 40, 120, false, 1, 3, 20, false, 8, 8 } }, { 0x06, 0x314f, 0x000000, { 640, 480, 4, 3, 31500, 0, false, 16, 64, 120, false, 1, 3, 16, false } }, { 0x07, 0x3159, 0x000000, { 640, 480, 4, 3, 36000, 0, false, 56, 56, 80, false, 1, 3, 25, false } }, { 0x08, 0x0000, 0x000000, { 800, 600, 4, 3, 36000, 0, false, 24, 72, 128, true, 1, 2, 22, true } }, { 0x09, 0x4540, 0x000000, { 800, 600, 4, 3, 40000, 0, false, 40, 128, 88, true, 1, 4, 23, true } }, { 0x0a, 0x454c, 0x000000, { 800, 600, 4, 3, 50000, 0, false, 56, 120, 64, true, 37, 6, 23, true } }, { 0x0b, 0x454f, 0x000000, { 800, 600, 4, 3, 49500, 0, false, 16, 80, 160, true, 1, 3, 21, true } }, { 0x0c, 0x4559, 0x000000, { 800, 600, 4, 3, 56250, 0, false, 32, 64, 152, true, 1, 3, 27, true } }, { 0x0d, 0x0000, 0x000000, { 800, 600, 4, 3, 73250, 1, false, 48, 32, 80, true, 3, 4, 29, false } }, { 0x0e, 0x0000, 0x000000, { 848, 480, 16, 9, 33750, 0, false, 16, 112, 112, true, 6, 8, 23, true } }, { 0x0f, 0x0000, 0x000000, { 1024, 768, 4, 3, 44900, 0, true, 8, 176, 56, true, 0, 4, 20, true } }, { 0x10, 0x6140, 0x000000, { 1024, 768, 4, 3, 65000, 0, false, 24, 136, 160, false, 3, 6, 29, false } }, { 0x11, 0x614c, 0x000000, { 1024, 768, 4, 3, 75000, 0, false, 24, 136, 144, false, 3, 6, 29, false } }, { 0x12, 0x614f, 0x000000, { 1024, 768, 4, 3, 78750, 0, false, 16, 96, 176, true, 1, 3, 28, true } }, { 0x13, 0x6159, 0x000000, { 1024, 768, 4, 3, 94500, 0, false, 48, 96, 208, true, 1, 3, 36, true } }, { 0x14, 0x0000, 0x000000, { 1024, 768, 4, 3, 115500, 1, false, 48, 32, 80, true, 3, 4, 38, false } }, { 0x15, 0x714f, 0x000000, { 1152, 864, 4, 3, 108000, 0, false, 64, 128, 256, true, 1, 3, 32, true } }, { 0x55, 0x81c0, 0x000000, { 1280, 720, 16, 9, 74250, 0, false, 110, 40, 220, true, 5, 5, 20, true } }, { 0x16, 0x0000, 0x7f1c21, { 1280, 768, 5, 3, 68250, 1, false, 48, 32, 80, true, 3, 7, 12, false } }, { 0x17, 0x0000, 0x7f1c28, { 1280, 768, 5, 3, 79500, 0, false, 64, 128, 192, false, 3, 7, 20, true } }, { 0x18, 0x0000, 0x7f1c44, { 1280, 768, 5, 3, 102250, 0, false, 80, 128, 208, false, 3, 7, 27, true } }, { 0x19, 0x0000, 0x7f1c62, { 1280, 768, 5, 3, 117500, 0, false, 80, 136, 216, false, 3, 7, 31, true } }, { 0x1a, 0x0000, 0x000000, { 1280, 768, 5, 3, 140250, 0, false, 48, 32, 80, true, 3, 7, 35, false } }, { 0x1b, 0x0000, 0x8f1821, { 1280, 800, 16, 10, 71000, 1, false, 48, 32, 80, true, 3, 6, 14, false } }, { 0x1c, 0x8100, 0x8f1828, { 1280, 800, 16, 10, 83500, 0, false, 72, 128, 200, false, 3, 6, 22, true } }, { 0x1d, 0x810f, 0x8f1844, { 1280, 800, 16, 10, 106500, 0, false, 80, 128, 208, false, 3, 6, 29, true } }, { 0x1e, 0x8119, 0x8f1862, { 1280, 800, 16, 10, 122500, 0, false, 80, 136, 216, false, 3, 6, 34, true } }, { 0x1f, 0x0000, 0x000000, { 1280, 800, 16, 10, 146250, 1, false, 48, 32, 80, true, 3, 6, 38, false } }, { 0x20, 0x8140, 0x000000, { 1280, 960, 4, 3, 108000, 0, false, 96, 112, 312, true, 1, 3, 36, true } }, { 0x21, 0x8159, 0x000000, { 1280, 960, 4, 3, 148500, 0, false, 64, 160, 224, true, 1, 3, 47, true } }, { 0x22, 0x0000, 0x000000, { 1280, 960, 4, 3, 175500, 1, false, 48, 32, 80, true, 3, 4, 50, false } }, { 0x23, 0x8180, 0x000000, { 1280, 1024, 5, 4, 108000, 0, false, 48, 112, 248, true, 1, 3, 38, true } }, { 0x24, 0x818f, 0x000000, { 1280, 1024, 5, 4, 135000, 0, false, 16, 144, 248, true, 1, 3, 38, true } }, { 0x25, 0x8199, 0x000000, { 1280, 1024, 5, 4, 157500, 0, false, 64, 160, 224, true, 1, 3, 44, true } }, { 0x26, 0x0000, 0x000000, { 1280, 1024, 5, 4, 187250, 1, false, 48, 32, 80, true, 3, 7, 50, false } }, { 0x27, 0x0000, 0x000000, { 1360, 768, 85, 48, 85500, 0, false, 64, 112, 256, true, 3, 6, 18, true } }, { 0x28, 0x0000, 0x000000, { 1360, 768, 85, 48, 148250, 1, false, 48, 32, 80, true, 3, 5, 37, false } }, { 0x51, 0x0000, 0x000000, { 1366, 768, 85, 48, 85500, 0, false, 70, 143, 213, true, 3, 3, 24, true } }, { 0x56, 0x0000, 0x000000, { 1366, 768, 85, 48, 72000, 1, false, 14, 56, 64, true, 1, 3, 28, true } }, { 0x29, 0x0000, 0x0c2021, { 1400, 1050, 4, 3, 101000, 1, false, 48, 32, 80, true, 3, 4, 23, false } }, { 0x2a, 0x9040, 0x0c2028, { 1400, 1050, 4, 3, 121750, 0, false, 88, 144, 232, false, 3, 4, 32, true } }, { 0x2b, 0x904f, 0x0c2044, { 1400, 1050, 4, 3, 156000, 0, false, 104, 144, 248, false, 3, 4, 42, true } }, { 0x2c, 0x9059, 0x0c2062, { 1400, 1050, 4, 3, 179500, 0, false, 104, 152, 256, false, 3, 4, 48, true } }, { 0x2d, 0x0000, 0x000000, { 1400, 1050, 4, 3, 208000, 1, false, 48, 32, 80, true, 3, 4, 55, false } }, { 0x2e, 0x0000, 0xc11821, { 1440, 900, 16, 10, 88750, 1, false, 48, 32, 80, true, 3, 6, 17, false } }, { 0x2f, 0x9500, 0xc11828, { 1440, 900, 16, 10, 106500, 0, false, 80, 152, 232, false, 3, 6, 25, true } }, { 0x30, 0x950f, 0xc11844, { 1440, 900, 16, 10, 136750, 0, false, 96, 152, 248, false, 3, 6, 33, true } }, { 0x31, 0x9519, 0xc11868, { 1440, 900, 16, 10, 157000, 0, false, 104, 152, 256, false, 3, 6, 39, true } }, { 0x32, 0x0000, 0x000000, { 1440, 900, 16, 10, 182750, 1, false, 48, 32, 80, true, 3, 6, 44, false } }, { 0x53, 0xa9c0, 0x000000, { 1600, 900, 16, 9, 108000, 1, false, 24, 80, 96, true, 1, 3, 96, true } }, { 0x33, 0xa940, 0x000000, { 1600, 1200, 4, 3, 162000, 0, false, 64, 192, 304, true, 1, 3, 46, true } }, { 0x34, 0xa945, 0x000000, { 1600, 1200, 4, 3, 175500, 0, false, 64, 192, 304, true, 1, 3, 46, true } }, { 0x35, 0xa94a, 0x000000, { 1600, 1200, 4, 3, 189000, 0, false, 64, 192, 304, true, 1, 3, 46, true } }, { 0x36, 0xa94f, 0x000000, { 1600, 1200, 4, 3, 202500, 0, false, 64, 192, 304, true, 1, 3, 46, true } }, { 0x37, 0xa959, 0x000000, { 1600, 1200, 4, 3, 229500, 0, false, 64, 192, 304, true, 1, 3, 46, true } }, { 0x38, 0x0000, 0x000000, { 1600, 1200, 4, 3, 268250, 1, false, 48, 32, 80, true, 3, 4, 64, false } }, { 0x39, 0x0000, 0x0c2821, { 1680, 1050, 16, 10, 119000, 1, false, 48, 32, 80, true, 3, 6, 21, false } }, { 0x3a, 0xb300, 0x0c2828, { 1680, 1050, 16, 10, 146250, 0, false, 104, 176, 280, false, 3, 6, 30, true } }, { 0x3b, 0xb30f, 0x0c2844, { 1680, 1050, 16, 10, 187000, 0, false, 120, 176, 296, false, 3, 6, 40, true } }, { 0x3c, 0xb319, 0x0c2868, { 1680, 1050, 16, 10, 214750, 0, false, 128, 176, 304, false, 3, 6, 46, true } }, { 0x3d, 0x0000, 0x000000, { 1680, 1050, 16, 10, 245500, 1, false, 48, 32, 80, true, 3, 6, 53, false } }, { 0x3e, 0xc140, 0x000000, { 1792, 1344, 4, 3, 204750, 0, false, 128, 200, 328, false, 1, 3, 46, true } }, { 0x3f, 0xc14f, 0x000000, { 1792, 1344, 4, 3, 261000, 0, false, 96, 216, 352, false, 1, 3, 69, true } }, { 0x40, 0x0000, 0x000000, { 1792, 1344, 4, 3, 333250, 1, false, 48, 32, 80, true, 3, 4, 72, false } }, { 0x41, 0xc940, 0x000000, { 1856, 1392, 4, 3, 218250, 0, false, 96, 224, 352, false, 1, 3, 43, true } }, { 0x42, 0xc94f, 0x000000, { 1856, 1392, 4, 3, 288000, 0, false, 128, 224, 352, false, 1, 3, 104, true } }, { 0x43, 0x0000, 0x000000, { 1856, 1392, 4, 3, 356500, 1, false, 48, 32, 80, true, 3, 4, 74, false } }, { 0x52, 0xd1c0, 0x000000, { 1920, 1080, 16, 9, 148500, 0, false, 88, 44, 148, true, 4, 5, 36, true } }, { 0x44, 0x0000, 0x572821, { 1920, 1200, 16, 10, 154000, 1, false, 48, 32, 80, true, 3, 6, 26, false } }, { 0x45, 0xd100, 0x572828, { 1920, 1200, 16, 10, 193250, 0, false, 136, 200, 336, false, 3, 6, 36, true } }, { 0x46, 0xd10f, 0x572844, { 1920, 1200, 16, 10, 245250, 0, false, 136, 208, 344, false, 3, 6, 46, true } }, { 0x47, 0xd119, 0x572862, { 1920, 1200, 16, 10, 281250, 0, false, 144, 208, 352, false, 3, 6, 53, true } }, { 0x48, 0x0000, 0x000000, { 1920, 1200, 16, 10, 317000, 1, false, 48, 32, 80, true, 3, 6, 62, false } }, { 0x49, 0xd140, 0x000000, { 1920, 1440, 4, 3, 234000, 0, false, 128, 208, 344, false, 1, 3, 56, true } }, { 0x4a, 0xd14f, 0x000000, { 1920, 1440, 4, 3, 297000, 0, false, 144, 224, 352, false, 1, 3, 56, true } }, { 0x4b, 0x0000, 0x000000, { 1920, 1440, 4, 3, 380500, 1, false, 48, 32, 80, true, 2, 3, 78, false } }, { 0x54, 0xe1c0, 0x000000, { 2048, 1152, 16, 9, 162000, 1, false, 26, 80, 96, true, 1, 3, 44, true } }, { 0x4c, 0x0000, 0x1f3821, { 2560, 1600, 16, 10, 268500, 1, false, 48, 32, 80, true, 3, 6, 37, false } }, { 0x4d, 0x0000, 0x1f3828, { 2560, 1600, 16, 10, 348500, 0, false, 192, 280, 472, false, 3, 6, 49, true } }, { 0x4e, 0x0000, 0x1f3844, { 2560, 1600, 16, 10, 443250, 0, false, 208, 280, 488, false, 3, 6, 63, true } }, { 0x4f, 0x0000, 0x1f3862, { 2560, 1600, 16, 10, 505250, 0, false, 208, 280, 488, false, 3, 6, 73, true } }, { 0x50, 0x0000, 0x000000, { 2560, 1600, 16, 10, 552750, 1, false, 48, 32, 80, true, 3, 6, 85, false } }, { 0x57, 0x0000, 0x000000, { 4096, 2160, 256, 135, 556744, 1, false, 8, 32, 40, true, 48, 8, 6, false } }, { 0x58, 0x0000, 0x000000, { 4096, 2160, 256, 135, 556188, 1, false, 8, 32, 40, true, 48, 8, 6, false } }, }; // The timings for the IBM/Apple modes are copied from the linux // kernel timings in drivers/gpu/drm/drm_edid.c, except for the // 1152x870 Apple format, which is copied from // drivers/video/fbdev/macmodes.c since the drm_edid.c version // describes a 1152x864 format. static const struct { unsigned dmt_id; struct timings t; const char *type; } established_timings12[] = { /* 0x23 bit 7 - 0 */ { 0x00, { 720, 400, 9, 5, 28320, 0, false, 18, 108, 54, false, 21, 2, 26, true }, "IBM" }, { 0x00, { 720, 400, 9, 5, 35500, 0, false, 18, 108, 54, false, 12, 2, 35, true }, "IBM" }, { 0x04 }, { 0x00, { 640, 480, 4, 3, 30240, 0, false, 64, 64, 96, false, 3, 3, 39, false }, "Apple" }, { 0x05 }, { 0x06 }, { 0x08 }, { 0x09 }, /* 0x24 bit 7 - 0 */ { 0x0a }, { 0x0b }, { 0x00, { 832, 624, 4, 3, 57284, 0, false, 32, 64, 224, false, 1, 3, 39, false }, "Apple" }, { 0x0f }, { 0x10 }, { 0x11 }, { 0x12 }, { 0x24 }, /* 0x25 bit 7 */ { 0x00, { 1152, 870, 192, 145, 100000, 0, false, 48, 128, 128, true, 3, 3, 39, true }, "Apple" }, }; // The bits in the Established Timings III map to DMT timings, // this array has the DMT IDs. static const unsigned char established_timings3_dmt_ids[] = { /* 0x06 bit 7 - 0 */ 0x01, // 640x350@85 0x02, // 640x400@85 0x03, // 720x400@85 0x07, // 640x480@85 0x0e, // 848x480@60 0x0c, // 800x600@85 0x13, // 1024x768@85 0x15, // 1152x864@75 /* 0x07 bit 7 - 0 */ 0x16, // 1280x768@60 RB 0x17, // 1280x768@60 0x18, // 1280x768@75 0x19, // 1280x768@85 0x20, // 1280x960@60 0x21, // 1280x960@85 0x23, // 1280x1024@60 0x25, // 1280x1024@85 /* 0x08 bit 7 - 0 */ 0x27, // 1360x768@60 0x2e, // 1440x900@60 RB 0x2f, // 1440x900@60 0x30, // 1440x900@75 0x31, // 1440x900@85 0x29, // 1400x1050@60 RB 0x2a, // 1400x1050@60 0x2b, // 1400x1050@75 /* 0x09 bit 7 - 0 */ 0x2c, // 1400x1050@85 0x39, // 1680x1050@60 RB 0x3a, // 1680x1050@60 0x3b, // 1680x1050@75 0x3c, // 1680x1050@85 0x33, // 1600x1200@60 0x34, // 1600x1200@65 0x35, // 1600x1200@70 /* 0x0a bit 7 - 0 */ 0x36, // 1600x1200@75 0x37, // 1600x1200@85 0x3e, // 1792x1344@60 0x3f, // 1792x1344@75 0x41, // 1856x1392@60 0x42, // 1856x1392@75 0x44, // 1920x1200@60 RB 0x45, // 1920x1200@60 /* 0x0b bit 7 - 4 */ 0x46, // 1920x1200@75 0x47, // 1920x1200@85 0x49, // 1920x1440@60 0x4a, // 1920x1440@75 }; const struct timings *find_dmt_id(unsigned char dmt_id) { unsigned i; for (i = 0; i < ARRAY_SIZE(dmt_timings); i++) if (dmt_timings[i].dmt_id == dmt_id) return &dmt_timings[i].t; return NULL; } static const struct timings *find_std_id(unsigned short std_id, unsigned char &dmt_id) { unsigned i; for (i = 0; i < ARRAY_SIZE(dmt_timings); i++) if (dmt_timings[i].std_id == std_id) { dmt_id = dmt_timings[i].dmt_id; return &dmt_timings[i].t; } return NULL; } void edid_state::list_established_timings() { printf("Established Timings I & II, 'Byte' is the EDID address:\n\n"); for (unsigned i = 0; i < ARRAY_SIZE(established_timings12); i++) { unsigned char dmt_id = established_timings12[i].dmt_id; const struct timings *t; char type[16]; if (dmt_id) { sprintf(type, "DMT 0x%02x", dmt_id); t = find_dmt_id(dmt_id); } else { t = &established_timings12[i].t; sprintf(type, "%-8s", established_timings12[i].type); } printf("Byte 0x%02x, Bit %u: ", 0x23 + i / 8, 7 - i % 8); print_timings("", t, type, "", false, false); } printf("\nEstablished timings III, 'Byte' is the offset from the start of the descriptor:\n\n"); for (unsigned i = 0; i < ARRAY_SIZE(established_timings3_dmt_ids); i++) { unsigned char dmt_id = established_timings3_dmt_ids[i]; char type[16]; sprintf(type, "DMT 0x%02x", dmt_id); printf("Byte 0x%02x, Bit %u: ", 6 + i / 8, 7 - i % 8); print_timings("", find_dmt_id(dmt_id), type, "", false, false); } } const struct timings *close_match_to_dmt(const timings &t, unsigned &dmt) { for (unsigned i = 0; i < ARRAY_SIZE(dmt_timings); i++) { if (timings_close_match(t, dmt_timings[i].t)) { dmt = dmt_timings[i].dmt_id; return &dmt_timings[i].t; } } dmt = 0; return NULL; } void edid_state::list_dmts() { char type[16]; for (unsigned i = 0; i < ARRAY_SIZE(dmt_timings); i++) { sprintf(type, "DMT 0x%02x", dmt_timings[i].dmt_id); std::string flags; if (dmt_timings[i].std_id) flags += std::string("STD: ") + utohex(dmt_timings[i].std_id >> 8) + " " + utohex(dmt_timings[i].std_id & 0xff); if (dmt_timings[i].cvt_id) add_str(flags, std::string("CVT: ") + utohex(dmt_timings[i].cvt_id >> 16) + " " + utohex((dmt_timings[i].cvt_id >> 8) & 0xff) + " " + utohex(dmt_timings[i].cvt_id & 0xff)); print_timings("", &dmt_timings[i].t, type, flags.c_str(), false, false); } } void edid_state::detailed_cvt_descriptor(const char *prefix, const unsigned char *x, bool first) { static const unsigned char empty[3] = { 0, 0, 0 }; struct timings cvt_t = {}; unsigned char preferred; if (!first && !memcmp(x, empty, 3)) return; cvt_t.vact = x[0]; if (!cvt_t.vact) fail("CVT byte 0 is 0, which is a reserved value.\n"); cvt_t.vact |= (x[1] & 0xf0) << 4; cvt_t.vact++; cvt_t.vact *= 2; switch (x[1] & 0x0c) { case 0x00: default: /* avoids 'width/ratio may be used uninitialized' warnings */ cvt_t.hratio = 4; cvt_t.vratio = 3; break; case 0x04: cvt_t.hratio = 16; cvt_t.vratio = 9; break; case 0x08: cvt_t.hratio = 16; cvt_t.vratio = 10; break; case 0x0c: cvt_t.hratio = 15; cvt_t.vratio = 9; break; } cvt_t.hact = 8 * (((cvt_t.vact * cvt_t.hratio) / cvt_t.vratio) / 8); if (x[1] & 0x03) fail("Reserved bits of CVT byte 1 are non-zero.\n"); if (x[2] & 0x80) fail("Reserved bit of CVT byte 2 is non-zero.\n"); if (!(x[2] & 0x1f)) fail("CVT byte 2 does not support any vertical rates.\n"); preferred = (x[2] & 0x60) >> 5; if (preferred == 1 && (x[2] & 0x01)) preferred = 4; if (!(x[2] & (1 << (4 - preferred)))) fail("The preferred CVT Vertical Rate is not supported.\n"); static const char *s_pref = "preferred vertical rate"; if (x[2] & 0x10) { edid_cvt_mode(50, cvt_t); print_timings(prefix, &cvt_t, "CVT", preferred == 0 ? s_pref : ""); } if (x[2] & 0x08) { edid_cvt_mode(60, cvt_t); print_timings(prefix, &cvt_t, "CVT", preferred == 1 ? s_pref : ""); } if (x[2] & 0x04) { edid_cvt_mode(75, cvt_t); print_timings(prefix, &cvt_t, "CVT", preferred == 2 ? s_pref : ""); } if (x[2] & 0x02) { edid_cvt_mode(85, cvt_t); print_timings(prefix, &cvt_t, "CVT", preferred == 3 ? s_pref : ""); } if (x[2] & 0x01) { cvt_t.rb = RB_CVT_V1; edid_cvt_mode(60, cvt_t); print_timings(prefix, &cvt_t, "CVT", preferred == 4 ? s_pref : ""); } } // Base Block uses Code Page 437, unprintable characters are represented by ▯ static const char *cp437[256] = { "▯", "☺", "☻", "♥", "♦", "♣", "♠", "•", "◘", "○", "◙", "♂", "♀", "♪", "♫", "☼", "►", "◄", "↕", "‼", "¶", "§", "▬", "↨", "↑", "↓", "→", "←", "∟", "↔", "▲", "▼", " ", "!", "\"", "#", "$", "%", "&", "'", "(", ")", "*", "+", ",", "-", ".", "/", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ":", ";", "<", "=", ">", "?", "@", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "[", "\\", "]", "^", "_", "`", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "{", "|", "}", "~", "⌂", "Ç", "ü", "é", "â", "ä", "à", "å", "ç", "ê", "ë", "è", "ï", "î", "ì", "Ä", "Å", "É", "æ", "Æ", "ô", "ö", "ò", "û", "ù", "ÿ", "Ö", "Ü", "¢", "£", "¥", "₧", "ƒ", "á", "í", "ó", "ú", "ñ", "Ñ", "ª", "º", "¿", "⌐", "¬", "½", "¼", "¡", "«", "»", "░", "▒", "▓", "│", "┤", "╡", "╢", "╖", "╕", "╣", "║", "╗", "╝", "╜", "╛", "┐", "└", "┴", "┬", "├", "─", "┼", "╞", "╟", "╚", "╔", "╩", "╦", "╠", "═", "╬", "╧", "╨", "╤", "╥", "╙", "╘", "╒", "╓", "╫", "╪", "┘", "┌", "█", "▄", "▌", "▐", "▀", "α", "ß", "Γ", "π", "Σ", "σ", "µ", "τ", "Φ", "Θ", "Ω", "δ", "∞", "φ", "ε", "∩", "≡", "±", "≥", "≤", "⌠", "⌡", "÷", "≈", "°", "∙", "·", "√", "ⁿ", "²", "■", "▯" }; // DisplayID uses ISO 8859-1, unprintable chararcters are represented by ▯ static const char *ascii[256] = { "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", " ", "!", "\"", "#", "$", "%", "&", "'", "(", ")", "*", "+", ",", "-", ".", "/", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ":", ";", "<", "=", ">", "?", "@", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "[", "\\", "]", "^", "_", "`", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "{", "|", "}", "~", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "▯", "¡", "¢", "£", "¤", "¥", "¦", "§", "¨", "©", "ª", "«", "¬", "▯", "®", "¯", "°", "±", "²", "³", "´", "µ", "¶", "·", "¸", "¹", "º", "»", "¼", "½", "¾", "¿", "À", "Á", "Â", "Ã", "Ä", "Å", "Æ", "Ç", "È", "É", "Ê", "Ë", "Ì", "Í", "Î", "Ï", "Ð", "Ñ", "Ò", "Ó", "Ô", "Õ", "Ö", "×", "Ø", "Ù", "Ú", "Û", "Ü", "Ý", "Þ", "ß", "à", "á", "â", "ã", "ä", "å", "æ", "ç", "è", "é", "ê", "ë", "ì", "í", "î", "ï", "ð", "ñ", "ò", "ó", "ô", "õ", "ö", "÷", "ø", "ù", "ú", "û", "ü", "ý", "þ", "ÿ" }; bool to_utf8 = false; /* extract a string from a detailed subblock, checking for termination */ char *extract_string(const unsigned char *x, unsigned len, bool is_cp437) { static char s[1025]; const char **conv = is_cp437 ? cp437 : ascii; bool seen_newline = false; bool added_space = false; unsigned i; memset(s, 0, sizeof(s)); for (i = 0; i < len; i++) { // The encoding is cp437, so any character is allowed, // but in practice it is unwise to use a non-ASCII character. bool non_ascii = (x[i] >= 1 && x[i] < 0x20 && x[i] != 0x0a) || x[i] >= 0x7f; if (seen_newline) { if (x[i] != 0x20) { fail("Non-space after newline.\n"); return s; } } else if (x[i] == 0x0a) { seen_newline = true; if (!i) fail("Empty string.\n"); else if (added_space) fail("One or more trailing spaces before newline.\n"); added_space = false; } else if (!x[i]) { // While incorrect, a \0 is often used to end the string fail("NUL byte at position %u.\n", i); return s; } else if (x[i] == 0xff) { // 0xff is sometimes (incorrectly) used to pad the remainder // of the string fail("0xff byte at position %u.\n", i); return s; } else if (!non_ascii) { added_space = x[i] == ' '; if (to_utf8) strcat(s, conv[x[i]]); else s[i] = x[i]; } else { if (to_utf8) { warn("Non-ASCII character 0x%02x (%s) at position %u, can cause problems.\n", x[i], conv[x[i]], i); strcat(s, conv[x[i]]); } else { warn("Non-ASCII character 0x%02x at position %u, can cause problems.\n", x[i], i); s[i] = '.'; } added_space = false; } } /* Does the string end with a space? */ if (!seen_newline && added_space) fail("No newline, but one or more trailing spaces.\n"); return s; } void edid_state::print_standard_timing(const char *prefix, unsigned char b1, unsigned char b2, bool gtf_only, bool show_both) { const struct timings *t; struct timings formula = {}; unsigned hratio, vratio; unsigned hact, vact, refresh; unsigned char dmt_id = 0; if (b1 <= 0x01) { if (b1 != 0x01 || b2 != 0x01) fail("Use 0x0101 as the invalid Standard Timings code, not 0x%02x%02x.\n", b1, b2); return; } t = find_std_id((b1 << 8) | b2, dmt_id); if (t) { char type[16]; sprintf(type, "DMT 0x%02x", dmt_id); print_timings(prefix, t, type); return; } hact = (b1 + 31) * 8; switch ((b2 >> 6) & 0x3) { case 0x00: if (gtf_only || show_both || base.edid_minor >= 3) { hratio = 16; vratio = 10; } else { hratio = 1; vratio = 1; } break; case 0x01: hratio = 4; vratio = 3; break; case 0x02: hratio = 5; vratio = 4; break; case 0x03: hratio = 16; vratio = 9; break; } vact = (double)hact * vratio / hratio; refresh = (b2 & 0x3f) + 60; formula.hact = hact; formula.vact = vact; formula.hratio = hratio; formula.vratio = vratio; if (!gtf_only && (show_both || base.edid_minor >= 4)) { if (show_both || base.supports_cvt) { edid_cvt_mode(refresh, formula); print_timings(prefix, &formula, "CVT ", show_both ? "" : "EDID 1.4 source"); } /* * An EDID 1.3 source will assume GTF, so both GTF and CVT * have to be supported. */ edid_gtf_mode(refresh, formula); if (base.supports_cvt) print_timings(prefix, &formula, "GTF ", "EDID 1.3 source"); else print_timings(prefix, &formula, "GTF "); } else if (gtf_only || base.edid_minor >= 2) { edid_gtf_mode(refresh, formula); print_timings(prefix, &formula, "GTF "); } else { printf("%sUnknown : %5ux%-5u %3u.000 Hz %3u:%u\n", prefix, hact, vact, refresh, hratio, vratio); min_vert_freq_hz = min(min_vert_freq_hz, refresh); max_vert_freq_hz = max(max_vert_freq_hz, refresh); } // See Ref. D-8 in the EDID-1.4 spec if (vact & 1) warn("Standard Timing %ux%u has a dubious odd vertical resolution.\n", hact, vact); } void edid_state::detailed_display_range_limits(const unsigned char *x) { int h_max_offset = 0, h_min_offset = 0; int v_max_offset = 0, v_min_offset = 0; int is_cvt = 0; bool has_sec_gtf = false; std::string range_class; data_block = "Display Range Limits"; printf(" %s:\n", data_block.c_str()); base.has_display_range_descriptor = 1; if (base.edid_minor >= 4) { if (x[4] & 0x02) { v_max_offset = 255; if (x[4] & 0x01) { v_min_offset = 255; } } if (x[4] & 0x08) { h_max_offset = 255; if (x[4] & 0x04) { h_min_offset = 255; } } } /* * despite the values, this is not a bitfield. */ switch (x[10]) { case 0x00: /* default gtf */ range_class = "GTF"; if (base.edid_minor >= 4 && !base.supports_continuous_freq) fail("GTF is supported, but the display does not support continuous frequencies.\n"); if (base.edid_minor >= 4) warn("GTF support is deprecated in EDID 1.4.\n"); break; case 0x01: /* range limits only */ range_class = "Range Limits Only"; if (base.edid_minor < 4) fail("'%s' is not allowed for EDID < 1.4.\n", range_class.c_str()); break; case 0x02: /* secondary gtf curve */ range_class = "Secondary GTF"; if (base.edid_minor >= 4 && !base.supports_continuous_freq) fail("Secondary GTF is supported, but the display does not support continuous frequencies.\n"); if (base.edid_minor >= 4) warn("GTF support is deprecated in EDID 1.4.\n"); has_sec_gtf = true; break; case 0x04: /* cvt */ range_class = "CVT"; is_cvt = 1; if (base.edid_minor < 4) fail("'%s' is not allowed for EDID < 1.4.\n", range_class.c_str()); else if (!base.supports_continuous_freq) fail("CVT is supported, but the display does not support continuous frequencies.\n"); break; default: /* invalid */ fail("Unknown range class (0x%02x).\n", x[10]); range_class = std::string("Unknown (") + utohex(x[10]) + ")"; break; } if (x[5] + v_min_offset > x[6] + v_max_offset) fail("Min vertical rate > max vertical rate.\n"); base.min_display_vert_freq_hz = x[5] + v_min_offset; base.max_display_vert_freq_hz = x[6] + v_max_offset; if (x[7] + h_min_offset > x[8] + h_max_offset) fail("Min horizontal freq > max horizontal freq.\n"); base.min_display_hor_freq_hz = (x[7] + h_min_offset) * 1000; base.max_display_hor_freq_hz = (x[8] + h_max_offset) * 1000; printf(" Monitor ranges (%s): %d-%d Hz V, %d-%d kHz H", range_class.c_str(), x[5] + v_min_offset, x[6] + v_max_offset, x[7] + h_min_offset, x[8] + h_max_offset); // For EDID 1.3 the horizontal frequency maxes out at 255 kHz. // So to avoid false range-check warnings due to this limitation, // just double the max_display_hor_freq_hz in this case. if (base.edid_minor < 4 && x[8] == 0xff) base.max_display_hor_freq_hz *= 2; // For EDID 1.3 the vertical frequency maxes out at 255 Hz. // So to avoid false range-check warnings due to this limitation, // just double the max_display_vert_freq_hz in this case. if (base.edid_minor < 4 && x[6] == 0xff) base.max_display_vert_freq_hz *= 2; if (x[9]) { base.max_display_pixclk_khz = x[9] * 10000; printf(", max dotclock %d MHz\n", x[9] * 10); } else { printf("\n"); if (base.edid_minor >= 4) fail("EDID 1.4 block does not set max dotclock.\n"); } if (has_sec_gtf) { if (x[11]) fail("Byte 11 is 0x%02x instead of 0x00.\n", x[11]); if (memchk(x + 12, 6)) { fail("Zeroed Secondary Curve Block.\n"); } else { printf(" GTF Secondary Curve Block:\n"); printf(" Start frequency: %u kHz\n", x[12] * 2); printf(" C: %.1f%%\n", x[13] / 2.0); printf(" M: %u%%/kHz\n", (x[15] << 8) | x[14]); printf(" K: %u\n", x[16]); printf(" J: %.1f%%\n", x[17] / 2.0); } } else if (is_cvt) { int max_h_pixels = 0; printf(" CVT version %d.%d\n", (x[11] & 0xf0) >> 4, x[11] & 0x0f); if (x[12] & 0xfc) { unsigned raw_offset = (x[12] & 0xfc) >> 2; printf(" Real max dotclock: %.2f MHz\n", (x[9] * 10) - (raw_offset * 0.25)); if (raw_offset >= 40) warn("CVT block corrects dotclock by more than 9.75 MHz.\n"); } max_h_pixels = x[12] & 0x03; max_h_pixels <<= 8; max_h_pixels |= x[13]; max_h_pixels *= 8; if (max_h_pixels) printf(" Max active pixels per line: %d\n", max_h_pixels); printf(" Supported aspect ratios:%s%s%s%s%s\n", x[14] & 0x80 ? " 4:3" : "", x[14] & 0x40 ? " 16:9" : "", x[14] & 0x20 ? " 16:10" : "", x[14] & 0x10 ? " 5:4" : "", x[14] & 0x08 ? " 15:9" : ""); if (x[14] & 0x07) fail("Reserved bits of byte 14 are non-zero.\n"); printf(" Preferred aspect ratio: "); switch ((x[15] & 0xe0) >> 5) { case 0x00: printf("4:3"); break; case 0x01: printf("16:9"); break; case 0x02: printf("16:10"); break; case 0x03: printf("5:4"); break; case 0x04: printf("15:9"); break; default: printf("Unknown (0x%02x)", (x[15] & 0xe0) >> 5); fail("Invalid preferred aspect ratio 0x%02x.\n", (x[15] & 0xe0) >> 5); break; } printf("\n"); if (x[15] & 0x08) printf(" Supports CVT standard blanking\n"); if (x[15] & 0x10) printf(" Supports CVT reduced blanking\n"); if (x[15] & 0x07) fail("Reserved bits of byte 15 are non-zero.\n"); if (x[16] & 0xf0) { printf(" Supported display scaling:\n"); if (x[16] & 0x80) printf(" Horizontal shrink\n"); if (x[16] & 0x40) printf(" Horizontal stretch\n"); if (x[16] & 0x20) printf(" Vertical shrink\n"); if (x[16] & 0x10) printf(" Vertical stretch\n"); } if (x[16] & 0x0f) fail("Reserved bits of byte 16 are non-zero.\n"); if (x[17]) printf(" Preferred vertical refresh: %d Hz\n", x[17]); else warn("CVT block does not set preferred refresh rate.\n"); } else { if (x[11] != 0x0a) fail("Byte 11 is 0x%02x instead of 0x0a.\n", x[11]); for (unsigned i = 12; i <= 17; i++) { if (x[i] != 0x20) { fail("Bytes 12-17 must be 0x20.\n"); break; } } } } void edid_state::detailed_epi(const unsigned char *x) { data_block = "EPI Descriptor"; printf(" %s:\n", data_block.c_str()); unsigned v = x[5] & 0x07; printf(" Bits per pixel: %u\n", 18 + v * 6); if (v > 2) fail("Invalid bits per pixel.\n"); v = (x[5] & 0x18) >> 3; printf(" Pixels per clock: %u\n", 1 << v); if (v > 2) fail("Invalid pixels per clock.\n"); v = (x[5] & 0x60) >> 5; printf(" Data color mapping: %sconventional\n", v ? "non-" : ""); if (v > 1) fail("Unknown data color mapping (0x%02x).\n", v); if (x[5] & 0x80) fail("Non-zero reserved field in byte 5.\n"); v = x[6] & 0x0f; printf(" Interface type: "); switch (v) { case 0x00: printf("LVDS TFT\n"); break; case 0x01: printf("monoSTN 4/8 Bit\n"); break; case 0x02: printf("colorSTN 8/16 Bit\n"); break; case 0x03: printf("18 Bit TFT\n"); break; case 0x04: printf("24 Bit TFT\n"); break; case 0x05: printf("TMDS\n"); break; default: printf("Unknown (0x%02x)\n", v); fail("Invalid interface type 0x%02x.\n", v); break; } printf(" DE polarity: DE %s active\n", (x[6] & 0x10) ? "low" : "high"); printf(" FPSCLK polarity: FPSCLK %sinverted\n", (x[6] & 0x20) ? "" : "not "); if (x[6] & 0xc0) fail("Non-zero reserved field in byte 6.\n"); printf(" Vertical display mode: %s\n", (x[7] & 0x01) ? "Up/Down reverse mode" : "normal"); printf(" Horizontal display mode: %s\n", (x[7] & 0x02) ? "Left/Right reverse mode" : "normal"); if (x[7] & 0xfc) fail("Non-zero reserved field in byte 7.\n"); v = x[8] & 0x0f; printf(" Total power on sequencing delay: "); if (v) printf("%u ms\n", v * 10); else printf("VGA controller default\n"); v = (x[8] & 0xf0) >> 4; printf(" Total power off sequencing delay: "); if (v) printf("%u ms\n", v * 10); else printf("VGA controller default\n"); v = x[9] & 0x0f; printf(" Contrast power on sequencing delay: "); if (v) printf("%u ms\n", v * 10); else printf("VGA controller default\n"); v = (x[9] & 0xf0) >> 4; printf(" Contrast power off sequencing delay: "); if (v) printf("%u ms\n", v * 10); else printf("VGA controller default\n"); v = x[10] & 0x2f; const char *s = (x[10] & 0x80) ? "" : " (ignored)"; printf(" Backlight brightness control: %u steps%s\n", v, s); printf(" Backlight enable at boot: %s%s\n", (x[10] & 0x40) ? "off" : "on", s); printf(" Backlight control enable: %s\n", (x[10] & 0x80) ? "enabled" : "disabled"); v = x[11] & 0x2f; s = (x[11] & 0x80) ? "" : " (ignored)"; printf(" Contrast voltable control: %u steps%s\n", v, s); if (x[11] & 0x40) fail("Non-zero reserved field in byte 11.\n"); printf(" Contrast control enable: %s\n", (x[11] & 0x80) ? "enabled" : "disabled"); if (x[12] || x[13] || x[14] || x[15] || x[16]) fail("Non-zero values in reserved bytes 12-16.\n"); printf(" EPI Version: %u.%u\n", (x[17] & 0xf0) >> 4, x[17] & 0x0f); } void edid_state::detailed_timings(const char *prefix, const unsigned char *x, bool base_or_cta) { struct timings t = {}; unsigned hbl, vbl; std::string s_sync, s_flags; // Only count DTDs in base block 0 or CTA-861 extension blocks if (base_or_cta) base.dtd_cnt++; data_block = "Detailed Timing Descriptor #" + std::to_string(base.dtd_cnt); t.pixclk_khz = (x[0] + (x[1] << 8)) * 10; if (t.pixclk_khz < 10000) { printf("%sDetailed mode: ", prefix); hex_block("", x, 18, true, 18); if (!t.pixclk_khz) fail("First two bytes are 0, invalid data.\n"); else fail("Pixelclock < 10 MHz, assuming invalid data 0x%02x 0x%02x.\n", x[0], x[1]); return; } /* * If the borders are non-zero, then it is unclear how to interpret * the DTD blanking parameters. * * According to EDID 1.3 (3.12) the Hor/Vert Blanking includes the * borders, and so does the Hor/Vert Sync Offset. * * According to EDID 1.4 (3.12) the Hor/Vert Blanking excludes the * borders, and they are also excluded from the Hor/Vert Front Porch. * * But looking at what is really done in EDIDs is that the Hor/Vert * Blanking follows EDID 1.3, but the Hor/Vert Front Porch does not * include the border. * * So hbl/vbl includes the borders, so those need to be subtracted, * but hfp/vfp is used as-is. * * In practice you really shouldn't use non-zero borders in DTDs * since clearly nobody knows how to interpret the timing. */ t.hact = (x[2] + ((x[4] & 0xf0) << 4)); t.hborder = x[15]; hbl = (x[3] + ((x[4] & 0x0f) << 8)) - t.hborder * 2; t.hfp = (x[8] + ((x[11] & 0xc0) << 2)); t.hsync = (x[9] + ((x[11] & 0x30) << 4)); t.hbp = hbl - t.hsync - t.hfp; t.vact = (x[5] + ((x[7] & 0xf0) << 4)); t.vborder = x[16]; vbl = (x[6] + ((x[7] & 0x0f) << 8)) - t.vborder * 2; t.vfp = ((x[10] >> 4) + ((x[11] & 0x0c) << 2)); t.vsync = ((x[10] & 0x0f) + ((x[11] & 0x03) << 4)); t.vbp = vbl - t.vsync - t.vfp; unsigned char flags = x[17]; if (base.has_spwg && base.detailed_block_cnt == 2) flags = *(x - 1); switch ((flags & 0x18) >> 3) { case 0x00: s_flags = "analog composite"; #ifdef __EMSCRIPTEN__ [[clang::fallthrough]]; #endif /* fall-through */ case 0x01: if (s_flags.empty()) s_flags = "bipolar analog composite"; switch ((flags & 0x06) >> 1) { case 0x00: add_str(s_flags, "sync-on-green"); break; case 0x01: break; case 0x02: add_str(s_flags, "serrate, sync-on-green"); break; case 0x03: add_str(s_flags, "serrate"); break; } break; case 0x02: if (flags & (1 << 1)) t.pos_pol_hsync = true; t.no_pol_vsync = true; s_flags = "digital composite"; if (flags & (1 << 2)) add_str(s_flags, "serrate"); break; case 0x03: if (flags & (1 << 1)) t.pos_pol_hsync = true; if (flags & (1 << 2)) t.pos_pol_vsync = true; s_sync = t.pos_pol_hsync ? "+hsync " : "-hsync "; s_sync += t.pos_pol_vsync ? "+vsync " : "-vsync "; if (base.has_spwg && (flags & 0x01)) s_flags = "DE timing only"; break; } if (flags & 0x80) { t.interlaced = true; t.vact *= 2; /* * Check if this DTD matches VIC code 39 with special * interlaced timings. */ if (t.hact == 1920 && t.vact == 1080 && t.pixclk_khz == 72000 && t.hfp == 32 && t.hsync == 168 && t.hbp == 184 && !t.hborder && t.vfp == 23 && t.vsync == 5 && t.vbp == 57 && !t.vborder && !base.has_spwg && cta.preparsed_has_vic[0][39] && (flags & 0x1e) == 0x1a) t.even_vtotal = true; } switch (flags & 0x61) { case 0x20: add_str(s_flags, "field sequential L/R"); break; case 0x40: add_str(s_flags, "field sequential R/L"); break; case 0x21: add_str(s_flags, "interleaved right even"); break; case 0x41: add_str(s_flags, "interleaved left even"); break; case 0x60: add_str(s_flags, "four way interleaved"); break; case 0x61: add_str(s_flags, "side by side interleaved"); break; default: break; } t.hsize_mm = x[12] + ((x[14] & 0xf0) << 4); t.vsize_mm = x[13] + ((x[14] & 0x0f) << 8); calc_ratio(&t); std::string s_type = base_or_cta ? dtd_type() : "DTD"; bool ok = print_timings(prefix, &t, s_type.c_str(), s_flags.c_str(), true); timings_ext te(t, s_type, s_flags); if (block_nr == 0 && base.dtd_cnt == 1) { te.type = "DTD 1"; base.preferred_timing = te; if (has_cta) { cta.preferred_timings.push_back(te); if (cta.byte3 & 0xf) { cta.native_timings.push_back(te); } } } if (base_or_cta) cta.vec_dtds.push_back(te); if (t.hborder || t.vborder) warn("The use of non-zero borders in a DTD is not recommended.\n"); if ((base.max_display_width_mm && !t.hsize_mm) || (base.max_display_height_mm && !t.vsize_mm)) { fail("Mismatch of image size vs display size: image size is not set, but display size is.\n"); } if (base.has_spwg && base.detailed_block_cnt == 2) printf("%sSPWG Module Revision: %hhu\n", prefix, x[17]); if (!ok) { std::string s = prefix; s += " "; hex_block(s.c_str(), x, 18, true, 18); } } bool edid_state::preparse_detailed_block(unsigned char *x) { if (x[0] || x[1]) return false; switch (x[3]) { case 0xfd: switch (x[10]) { case 0x00: /* default gtf */ base.supports_gtf = true; break; case 0x02: /* secondary gtf curve */ base.supports_gtf = true; base.supports_sec_gtf = !memchk(x + 12, 6); base.sec_gtf_start_freq = x[12] * 2; base.C = x[13] / 2.0; base.M = (x[15] << 8) | x[14]; base.K = x[16]; base.J = x[17] / 2.0; break; case 0x04: /* cvt */ if (base.edid_minor >= 4) { /* GTF is implied if CVT is signaled */ base.supports_gtf = true; base.supports_cvt = true; } break; } break; case 0xff: data_block = "Display Product Serial Number"; serial_strings.push_back(extract_string(x + 5, 13, true)); data_block.clear(); if (replace_unique_ids) { // Replace with 123456 static const unsigned char sernum[13] = { '1', '2', '3', '4', '5', '6', '\n', ' ', ' ', ' ', ' ', ' ', ' ' }; memcpy(x + 5, sernum, sizeof(sernum)); return true; } break; } return false; } void edid_state::detailed_block(const unsigned char *x) { static const unsigned char zero_descr[18] = { 0 }; unsigned cnt; unsigned i; base.detailed_block_cnt++; if (x[0] || x[1]) { detailed_timings(" ", x); if (base.seen_non_detailed_descriptor) fail("Invalid detailed timing descriptor ordering.\n"); return; } data_block = "Display Descriptor #" + std::to_string(base.detailed_block_cnt); /* Monitor descriptor block, not detailed timing descriptor. */ if (x[2] != 0) { /* 1.3, 3.10.3 */ fail("Monitor descriptor block has byte 2 nonzero (0x%02x).\n", x[2]); } if ((base.edid_minor < 4 || x[3] != 0xfd) && x[4] != 0x00) { /* 1.3, 3.10.3 */ fail("Monitor descriptor block has byte 4 nonzero (0x%02x).\n", x[4]); } base.seen_non_detailed_descriptor = true; if (base.edid_minor == 0) fail("Has descriptor blocks other than detailed timings.\n"); if (!memcmp(x, zero_descr, sizeof(zero_descr))) { data_block = "Empty Descriptor"; printf(" %s\n", data_block.c_str()); fail("Use Dummy Descriptor instead of all zeroes.\n"); return; } switch (x[3]) { case 0x0e: detailed_epi(x); return; case 0x10: data_block = "Dummy Descriptor"; printf(" %s:\n", data_block.c_str()); for (i = 5; i < 18; i++) { if (x[i]) { fail("Dummy block filled with garbage.\n"); break; } } return; case 0xf7: data_block = "Established timings III"; printf(" %s:\n", data_block.c_str()); for (i = 0; i < ARRAY_SIZE(established_timings3_dmt_ids); i++) if (x[6 + i / 8] & (1 << (7 - i % 8))) { unsigned char dmt_id = established_timings3_dmt_ids[i]; char type[16]; sprintf(type, "DMT 0x%02x", dmt_id); print_timings(" ", find_dmt_id(dmt_id), type); } if (base.edid_minor < 4) fail("Not allowed for EDID < 1.4.\n"); return; case 0xf8: data_block = "CVT 3 Byte Timing Codes"; printf(" %s:\n", data_block.c_str()); if (x[5] != 0x01) { fail("Invalid version number %u.\n", x[5]); return; } for (i = 0; i < 4; i++) detailed_cvt_descriptor(" ", x + 6 + (i * 3), !i); if (base.edid_minor < 4) fail("Not allowed for EDID < 1.4.\n"); return; case 0xf9: data_block = "Display Color Management Data"; printf(" %s:\n", data_block.c_str()); printf(" Version : %d\n", x[5]); printf(" Red a3 : %.2f\n", (short)(x[6] | (x[7] << 8)) / 100.0); printf(" Red a2 : %.2f\n", (short)(x[8] | (x[9] << 8)) / 100.0); printf(" Green a3: %.2f\n", (short)(x[10] | (x[11] << 8)) / 100.0); printf(" Green a2: %.2f\n", (short)(x[12] | (x[13] << 8)) / 100.0); printf(" Blue a3 : %.2f\n", (short)(x[14] | (x[15] << 8)) / 100.0); printf(" Blue a2 : %.2f\n", (short)(x[16] | (x[17] << 8)) / 100.0); return; case 0xfa: data_block = "Standard Timing Identifications"; printf(" %s:\n", data_block.c_str()); for (cnt = i = 0; i < 6; i++) { if (x[5 + i * 2] != 0x01 || x[5 + i * 2 + 1] != 0x01) cnt++; print_standard_timing(" ", x[5 + i * 2], x[5 + i * 2 + 1]); } if (!cnt) warn("%s block without any timings.\n", data_block.c_str()); return; case 0xfb: { unsigned w_x, w_y; unsigned gamma; data_block = "Color Point Data"; printf(" %s:\n", data_block.c_str()); w_x = (x[7] << 2) | ((x[6] >> 2) & 3); w_y = (x[8] << 2) | (x[6] & 3); gamma = x[9]; printf(" Index: %u White: 0.%04u, 0.%04u", x[5], (w_x * 10000) / 1024, (w_y * 10000) / 1024); if (gamma == 0xff) printf(" Gamma: is defined in an extension block"); else printf(" Gamma: %.2f", ((gamma + 100.0) / 100.0)); printf("\n"); if (x[10] == 0) return; w_x = (x[12] << 2) | ((x[11] >> 2) & 3); w_y = (x[13] << 2) | (x[11] & 3); gamma = x[14]; printf(" Index: %u White: 0.%04u, 0.%04u", x[10], (w_x * 10000) / 1024, (w_y * 10000) / 1024); if (gamma == 0xff) printf(" Gamma: is defined in an extension block"); else printf(" Gamma: %.2f", ((gamma + 100.0) / 100.0)); printf("\n"); return; } case 0xfc: data_block = "Display Product Name"; base.has_name_descriptor = 1; printf(" %s: '%s'\n", data_block.c_str(), extract_string(x + 5, 13, true)); return; case 0xfd: detailed_display_range_limits(x); return; case 0xfe: if (!base.has_spwg || base.detailed_block_cnt < 3) { data_block = "Alphanumeric Data String"; printf(" %s: '%s'\n", data_block.c_str(), extract_string(x + 5, 13, true)); return; } if (base.detailed_block_cnt == 3) { char buf[6] = { 0 }; data_block = "SPWG Descriptor #3"; printf(" %s:\n", data_block.c_str()); memcpy(buf, x + 5, 5); if (strlen(buf) != 5) fail("Invalid PC Maker P/N length.\n"); printf(" SPWG PC Maker P/N: '%s'\n", buf); printf(" SPWG LCD Supplier EEDID Revision: %hhu\n", x[10]); printf(" SPWG Manufacturer P/N: '%s'\n", extract_string(x + 11, 7, true)); } else { data_block = "SPWG Descriptor #4"; printf(" %s:\n", data_block.c_str()); printf(" SMBUS Values: 0x%02hhx 0x%02hhx 0x%02hhx 0x%02hhx" " 0x%02hhx 0x%02hhx 0x%02hhx 0x%02hhx\n", x[5], x[6], x[7], x[8], x[9], x[10], x[11], x[12]); printf(" LVDS Channels: %hhu\n", x[13]); printf(" Panel Self Test %sPresent\n", x[14] ? "" : "Not "); if (x[15] != 0x0a || x[16] != 0x20 || x[17] != 0x20) fail("Invalid trailing data.\n"); } return; case 0xff: { static const char * const dummy_sn[] = { "na", "n/a", "NA", "Serial Number", "SerialNumber", "Serial_Number", "121212121212", "1234567890123", "20000080", "SN-000000001", "demoset-1", "H1AK500000", // Often used with Samsung displays NULL }; data_block = "Display Product Serial Number"; const char *sn = serial_strings[serial_string_cnt++].c_str(); if (hide_serial_numbers) printf(" %s: ...\n", data_block.c_str()); else if (replace_unique_ids) printf(" %s: '123456'\n", data_block.c_str()); else printf(" %s: '%s'\n", data_block.c_str(), sn); bool dummy = true; // Any serial numbers consisting only of spaces, 0, and/or 1 // characters are always considered dummy values. for (unsigned i = 0; i < strlen(sn); i++) { if (!strchr(" 01", sn[i])) { dummy = false; break; } } // In addition, check against a list of known dummy S/Ns for (unsigned i = 0; !dummy && dummy_sn[i]; i++) { if (!strcmp(sn, dummy_sn[i])) { dummy = true; break; } } if (dummy && sn[0]) warn("The serial number is one of the known dummy values, is that intended?\n"); return; } default: printf(" %s Display Descriptor (0x%02hhx):", x[3] <= 0x0f ? "Manufacturer-Specified" : "Unknown", x[3]); hex_block(" ", x + 2, 16); if (x[3] > 0x0f) fail("Unknown Type 0x%02hhx.\n", x[3]); return; } } /* * The sRGB chromaticities are (x, y): * red: 0.640, 0.330 * green: 0.300, 0.600 * blue: 0.150, 0.060 * white: 0.3127, 0.3290 */ static const unsigned char srgb_chromaticity[10] = { 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54 }; void edid_state::preparse_base_block(unsigned char *x) { bool update_checksum = false; base.serial_number = x[0x0c] + (x[0x0d] << 8) + (x[0x0e] << 16) + (x[0x0f] << 24); if (base.serial_number && replace_unique_ids) { // Replace by 123456 x[0x0c] = 0x40; x[0x0d] = 0xe2; x[0x0e] = 0x01; x[0x0f] = 0x00; update_checksum = true; } base.week = x[0x10]; base.year = x[0x11]; if (replace_unique_ids && base.week != 0xff) { x[0x10] = 0; x[0x11] = 10; update_checksum = true; } /* * Need to find the Display Range Limit info before reading * the standard timings. */ update_checksum |= preparse_detailed_block(x + 0x36); update_checksum |= preparse_detailed_block(x + 0x48); update_checksum |= preparse_detailed_block(x + 0x5a); update_checksum |= preparse_detailed_block(x + 0x6c); if (update_checksum) replace_checksum(x, EDID_PAGE_SIZE); } void edid_state::parse_base_block(const unsigned char *x) { time_t the_time; struct tm *ptm; unsigned col_x, col_y; bool has_preferred_timing = false; char *manufacturer; data_block = "EDID Structure Version & Revision"; printf(" %s: %hhu.%hhu\n", data_block.c_str(), x[0x12], x[0x13]); if (x[0x12] == 1) { base.edid_minor = x[0x13]; if (base.edid_minor > 4) warn("Unknown EDID minor version %u, assuming 1.4 conformance.\n", base.edid_minor); if (base.edid_minor < 3) warn("EDID 1.%u is deprecated, do not use.\n", base.edid_minor); } else { fail("Unknown EDID major version.\n"); } data_block = "Vendor & Product Identification"; manufacturer = manufacturer_name(x + 0x08); printf(" %s:\n", data_block.c_str()); printf(" Manufacturer: %s\n Model: %u\n", manufacturer, (unsigned short)(x[0x0a] + (x[0x0b] << 8))); if (!strcmp(manufacturer, "CID")) { if (has_cta && !cta.has_pidb) fail("Manufacturer name is set to CID, but there is no CTA-861 Product Information Data Block.\n"); if (has_dispid && !has_cta && !dispid.has_product_identification) fail("Manufacturer name is set to CID, but there is no DisplayID Product Identification Data Block.\n"); } if (base.serial_number) { unsigned sn = base.serial_number; if (hide_serial_numbers) printf(" Serial Number: ...\n"); else printf(" Serial Number: %u (0x%08x)\n", sn, sn); // This is a list of known dummy values that are often used in EDIDs: switch (sn) { case 1: case 0x01010101: case 1010101: case 0x5445: case 0x80000000: case 20000080: case 8888: case 6666: warn("The serial number is one of the known dummy values, it should probably be set to 0.\n"); break; } } time(&the_time); ptm = localtime(&the_time); unsigned char week = base.week; int year = 1990 + base.year; if (week) { if (base.edid_minor <= 3 && week == 0xff) fail("EDID 1.3 does not support week 0xff.\n"); // The max week is 53 in EDID 1.3 and 54 in EDID 1.4. // No idea why there is a difference. if (base.edid_minor <= 3 && week == 54) fail("EDID 1.3 does not support week 54.\n"); if (week != 0xff && week > 54) fail("Invalid week of manufacture (> 54).\n"); } if (year - 1 > ptm->tm_year + 1900) fail("The year is more than one year in the future.\n"); if (week == 0xff) printf(" Model year: %d\n", year); else if (replace_unique_ids) printf(" Made in: 2000\n"); else if (week) printf(" Made in: week %hhu of %d\n", week, year); else printf(" Made in: %d\n", year); /* display section */ data_block = "Basic Display Parameters & Features"; printf(" %s:\n", data_block.c_str()); if (x[0x14] & 0x80) { base.is_analog = false; printf(" Digital display\n"); if (base.edid_minor >= 4) { if ((x[0x14] & 0x70) == 0x00) printf(" Color depth is undefined\n"); else if ((x[0x14] & 0x70) == 0x70) fail("Color Bit Depth set to reserved value.\n"); else printf(" Bits per primary color channel: %u\n", ((x[0x14] & 0x70) >> 3) + 4); printf(" "); switch (x[0x14] & 0x0f) { case 0x00: printf("Digital interface is not defined\n"); break; case 0x01: printf("DVI interface\n"); break; case 0x02: printf("HDMI-a interface\n"); break; case 0x03: printf("HDMI-b interface\n"); break; case 0x04: printf("MDDI interface\n"); break; case 0x05: printf("DisplayPort interface\n"); break; default: printf("Unknown interface: 0x%02x\n", x[0x14] & 0x0f); fail("Digital Video Interface Standard set to reserved value 0x%02x.\n", x[0x14] & 0x0f); break; } } else if (base.edid_minor >= 2) { if (x[0x14] & 0x01) { printf(" DFP 1.x compatible TMDS\n"); } if (x[0x14] & 0x7e) fail("Digital Video Interface Standard set to reserved value 0x%02x.\n", x[0x14] & 0x7e); } else if (x[0x14] & 0x7f) { fail("Digital Video Interface Standard set to reserved value 0x%02x.\n", x[0x14] & 0x7f); } } else { static const char * const voltages[] = { "0.700 : 0.300 : 1.000 V p-p", "0.714 : 0.286 : 1.000 V p-p", "1.000 : 0.400 : 1.400 V p-p", "0.700 : 0.000 : 0.700 V p-p" }; unsigned voltage = (x[0x14] & 0x60) >> 5; unsigned sync = (x[0x14] & 0x0f); base.is_analog = true; printf(" Analog display\n"); printf(" Signal Level Standard: %s\n", voltages[voltage]); if (x[0x14] & 0x10) printf(" Blank-to-black setup/pedestal\n"); else printf(" Blank level equals black level\n"); if (sync) printf(" Sync:%s%s%s%s\n", sync & 0x08 ? " Separate" : "", sync & 0x04 ? " Composite" : "", sync & 0x02 ? " SyncOnGreen" : "", sync & 0x01 ? " Serration" : ""); } if (x[0x15] && x[0x16]) { unsigned factor = cta.preparsed_image_size == hdmi_image_size_5cm ? 5 : 1; printf(" Maximum image size: %u cm x %u cm%s\n", x[0x15] * factor, x[0x16] * factor, factor == 5 ? " (HDMI VSDB indicates 5 cm units)" : ""); base.max_display_width_mm = x[0x15] * 10 * factor; base.max_display_height_mm = x[0x16] * 10 * factor; image_width = base.max_display_width_mm * 10; image_height = base.max_display_height_mm * 10; if (x[0x15] < 10 || x[0x16] < 10) warn("Dubious maximum image size (%ux%u is smaller than %ux%u cm).\n", x[0x15] * factor, x[0x16] * factor, 10 * factor, 10 * factor); } else if (base.edid_minor >= 4 && (x[0x15] || x[0x16])) { if (x[0x15]) printf(" Aspect ratio: %.2f (landscape)\n", (x[0x15] + 99) / 100.0); else printf(" Aspect ratio: %.2f (portrait)\n", 100.0 / (x[0x16] + 99)); } else { /* Either or both can be zero for 1.3 and before */ printf(" Image size is variable\n"); } if (x[0x17] == 0xff) printf(" Gamma is defined in an extension block\n"); else printf(" Gamma: %.2f\n", (x[0x17] + 100.0) / 100.0); if (x[0x18] & 0xe0) { printf(" DPMS levels:"); if (x[0x18] & 0x80) printf(" Standby"); if (x[0x18] & 0x40) printf(" Suspend"); if (x[0x18] & 0x20) printf(" Off"); printf("\n"); } if (base.is_analog || base.edid_minor < 4) { printf(" "); switch (x[0x18] & 0x18) { case 0x00: printf("Monochrome or grayscale display\n"); break; case 0x08: printf("RGB color display\n"); break; case 0x10: printf("Non-RGB color display\n"); break; case 0x18: printf("Undefined display color type\n"); break; } } else { printf(" Supported color formats: RGB 4:4:4"); if (x[0x18] & 0x08) printf(", YCrCb 4:4:4"); if (x[0x18] & 0x10) printf(", YCrCb 4:2:2"); printf("\n"); } if (x[0x18] & 0x04) { printf(" Default (sRGB) color space is primary color space\n"); if (memcmp(x + 0x19, srgb_chromaticity, sizeof(srgb_chromaticity))) fail("sRGB is signaled, but the chromaticities do not match.\n"); if (x[0x17] != 120) warn("sRGB is signaled, but the gamma != 2.2.\n"); base.uses_srgb = true; } else if (!memcmp(x + 0x19, srgb_chromaticity, sizeof(srgb_chromaticity))) { fail("The chromaticities match sRGB, but sRGB is not signaled.\n"); base.uses_srgb = true; } if (base.edid_minor >= 4) { /* 1.4 always has a preferred timing and this bit means something else. */ has_preferred_timing = true; base.preferred_is_also_native = x[0x18] & 0x02; printf(" First detailed timing %s the native pixel format and preferred refresh rate\n", base.preferred_is_also_native ? "includes" : "does not include"); } else { if (x[0x18] & 0x02) { printf(" First detailed timing is the preferred timing\n"); has_preferred_timing = true; // 1.3 recommends that the preferred timing corresponds to the // native timing, but it is not a requirement. // That said, we continue with the assumption that it actually // is the native timing. base.preferred_is_also_native = true; } else if (base.edid_minor == 3) { fail("EDID 1.3 requires that the first detailed timing is the preferred timing.\n"); } } if (x[0x18] & 0x01) { if (base.edid_minor >= 4) { base.supports_continuous_freq = true; printf(" Display supports continuous frequencies\n"); } else { printf(" Supports GTF timings within operating range\n"); base.supports_gtf = true; } } data_block = "Color Characteristics"; printf(" %s:\n", data_block.c_str()); col_x = (x[0x1b] << 2) | (x[0x19] >> 6); col_y = (x[0x1c] << 2) | ((x[0x19] >> 4) & 3); printf(" Red : 0.%04u, 0.%04u\n", (col_x * 10000) / 1024, (col_y * 10000) / 1024); col_x = (x[0x1d] << 2) | ((x[0x19] >> 2) & 3); col_y = (x[0x1e] << 2) | (x[0x19] & 3); printf(" Green: 0.%04u, 0.%04u\n", (col_x * 10000) / 1024, (col_y * 10000) / 1024); col_x = (x[0x1f] << 2) | (x[0x1a] >> 6); col_y = (x[0x20] << 2) | ((x[0x1a] >> 4) & 3); printf(" Blue : 0.%04u, 0.%04u\n", (col_x * 10000) / 1024, (col_y * 10000) / 1024); col_x = (x[0x21] << 2) | ((x[0x1a] >> 2) & 3); col_y = (x[0x22] << 2) | (x[0x1a] & 3); printf(" White: 0.%04u, 0.%04u\n", (col_x * 10000) / 1024, (col_y * 10000) / 1024); data_block = "Established Timings I & II"; if (x[0x23] || x[0x24] || x[0x25]) { printf(" %s:\n", data_block.c_str()); for (unsigned i = 0; i < ARRAY_SIZE(established_timings12); i++) { if (x[0x23 + i / 8] & (1 << (7 - i % 8))) { unsigned char dmt_id = established_timings12[i].dmt_id; const struct timings *t; char type[16]; if (dmt_id) { sprintf(type, "DMT 0x%02x", dmt_id); t = find_dmt_id(dmt_id); } else { t = &established_timings12[i].t; sprintf(type, "%-8s", established_timings12[i].type); } print_timings(" ", t, type); } } } else { printf(" %s: none\n", data_block.c_str()); } base.has_640x480p60_est_timing = x[0x23] & 0x20; data_block = "Standard Timings"; bool found = false; for (unsigned i = 0; i < 8; i++) { if (x[0x26 + i * 2] != 0x01 || x[0x26 + i * 2 + 1] != 0x01) { found = true; break; } } if (found) { printf(" %s:\n", data_block.c_str()); for (unsigned i = 0; i < 8; i++) print_standard_timing(" ", x[0x26 + i * 2], x[0x26 + i * 2 + 1]); } else { printf(" %s: none\n", data_block.c_str()); } /* 18 byte descriptors */ if (has_preferred_timing && !x[0x36] && !x[0x37]) fail("Missing preferred timing.\n"); /* Look for SPWG Noteboook Panel EDID data blocks */ if ((x[0x36] || x[0x37]) && (x[0x48] || x[0x49]) && !x[0x5a] && !x[0x5b] && x[0x5d] == 0xfe && !x[0x6c] && !x[0x6d] && x[0x6f] == 0xfe && (x[0x79] == 1 || x[0x79] == 2) && x[0x7a] <= 1) base.has_spwg = true; for (unsigned i = 0; i < (base.has_spwg ? 2 : 4); i++) if (x[0x36 + i * 18] || x[0x37 + i * 18]) cta.preparsed_total_dtds++; data_block = "Detailed Timing Descriptors"; printf(" %s:\n", data_block.c_str()); detailed_block(x + 0x36); detailed_block(x + 0x48); detailed_block(x + 0x5a); detailed_block(x + 0x6c); base.has_spwg = false; if (!has_preferred_timing) { base.preferred_timing = timings_ext(); } data_block = block; if (x[0x7e]) printf(" Extension blocks: %u\n", x[0x7e]); block = block_name(0x00); data_block.clear(); do_checksum("", x, EDID_PAGE_SIZE, EDID_PAGE_SIZE - 1); if (base.edid_minor >= 3) { if (!base.has_name_descriptor) msg(base.edid_minor >= 4, "Missing Display Product Name.\n"); if ((base.edid_minor == 3 || base.supports_continuous_freq) && !base.has_display_range_descriptor) fail("Missing Display Range Limits Descriptor.\n"); } } void edid_state::check_base_block(const unsigned char *x) { data_block = "Base EDID"; /* * Allow for regular rounding of vertical and horizontal frequencies. * The spec says that the pixelclock shall be rounded up, so there is * no need to take rounding into account. */ if (base.has_display_range_descriptor && (min_vert_freq_hz + 0.5 < base.min_display_vert_freq_hz || (max_vert_freq_hz >= base.max_display_vert_freq_hz + 0.5 && base.max_display_vert_freq_hz) || min_hor_freq_hz + 500 < base.min_display_hor_freq_hz || (max_hor_freq_hz >= base.max_display_hor_freq_hz + 500 && base.max_display_hor_freq_hz) || (max_pixclk_khz > base.max_display_pixclk_khz && base.max_display_pixclk_khz))) { /* * Check if it is really out of range, or if it could be a rounding error. * The EDID spec is not very clear about rounding. */ bool out_of_range = min_vert_freq_hz + 1.0 <= base.min_display_vert_freq_hz || (max_vert_freq_hz >= base.max_display_vert_freq_hz + 1.0 && base.max_display_vert_freq_hz) || min_hor_freq_hz + 1000 <= base.min_display_hor_freq_hz || (max_hor_freq_hz >= base.max_display_hor_freq_hz + 1000 && base.max_display_hor_freq_hz) || (max_pixclk_khz >= base.max_display_pixclk_khz + 10000 && base.max_display_pixclk_khz); std::string err("Some timings are out of range of the Monitor Ranges:\n"); char buf[512]; if (min_vert_freq_hz + 0.5 < base.min_display_vert_freq_hz || (max_vert_freq_hz >= base.max_display_vert_freq_hz + 0.5 && base.max_display_vert_freq_hz)) { sprintf(buf, " Vertical Freq: %.3f - %.3f Hz (Monitor: %u.000 - %u.000 Hz)\n", min_vert_freq_hz, max_vert_freq_hz, base.min_display_vert_freq_hz, base.max_display_vert_freq_hz); err += buf; } if (min_hor_freq_hz + 500 < base.min_display_hor_freq_hz || (max_hor_freq_hz >= base.max_display_hor_freq_hz + 500 && base.max_display_hor_freq_hz)) { sprintf(buf, " Horizontal Freq: %.3f - %.3f kHz (Monitor: %.3f - %.3f kHz)\n", min_hor_freq_hz / 1000.0, max_hor_freq_hz / 1000.0, base.min_display_hor_freq_hz / 1000.0, base.max_display_hor_freq_hz / 1000.0); err += buf; } if (max_pixclk_khz >= base.max_display_pixclk_khz && base.max_display_pixclk_khz) { sprintf(buf, " Maximum Clock: %.3f MHz (Monitor: %.3f MHz)\n", max_pixclk_khz / 1000.0, base.max_display_pixclk_khz / 1000.0); err += buf; } if (!out_of_range) err += " Could be due to a Monitor Range off-by-one rounding issue\n"; warn("%s", err.c_str()); } if ((image_width && dtd_max_hsize_mm >= 10 + image_width / 10) || (image_height && dtd_max_vsize_mm >= 10 + image_height / 10)) fail("The DTD max image size is %ux%umm, which is larger than the display size %.1fx%.1fmm.\n", dtd_max_hsize_mm, dtd_max_vsize_mm, image_width / 10.0, image_height / 10.0); if ((!image_width && dtd_max_hsize_mm) || (!image_height && dtd_max_vsize_mm)) fail("The DTD max image size is %ux%umm, but the display size is not specified anywhere.\n", dtd_max_hsize_mm, dtd_max_vsize_mm); // Secondary GTF curves start at a specific frequency. Any legacy timings // that have a positive hsync and negative vsync must be less than that // frequency to avoid confusion. if (base.supports_sec_gtf && base.max_pos_neg_hor_freq_khz >= base.sec_gtf_start_freq) fail("Second GTF start frequency %u is less than the highest P/N frequency %u.\n", base.sec_gtf_start_freq, base.max_pos_neg_hor_freq_khz); if (x[0x7e] + 1U != num_blocks && !cta.hf_eeodb_blocks) fail("EDID specified %u extension block(s), but found %u extension block(s).\n", x[0x7e], num_blocks - 1); else if (x[0x7e] != 1 && cta.hf_eeodb_blocks) fail("HDMI Forum EDID Extension Override Data Block is present, but Block 0 defined %u instead of 1 Extension Blocks.\n", x[0x7e]); else if (x[0x7e] == 1 && cta.hf_eeodb_blocks && cta.hf_eeodb_blocks + 1 != num_blocks) fail("HDMI Forum EDID Extension Override Data Block specified %u extension block(s), but found %u extension block(s).\n", cta.hf_eeodb_blocks, num_blocks - 1); if (base.edid_minor == 3 && num_blocks > 2 && !block_map.saw_block_1 && !cta.hf_eeodb_blocks) fail("EDID 1.3 requires a Block Map Extension in Block 1 if there are more than 2 blocks in the EDID.\n"); if (base.edid_minor == 3 && num_blocks > 128 && !block_map.saw_block_128 && !cta.hf_eeodb_blocks) fail("EDID 1.3 requires a Block Map Extension in Block 128 if there are more than 128 blocks in the EDID.\n"); if (block_map.saw_block_128 && num_blocks > 255) fail("If there is a Block Map Extension in Block 128 then the maximum number of blocks is 255.\n"); if (serial_strings.size() > 1) warn("Multiple Display Product Serial Numbers are specified, is that intended?\n"); }